Wat is LessonUp
Zoeken
Kanalen
Inloggen
Registreren
‹
Terug naar zoeken
IGCSE ICT Chapter 3.1 and 3.2
Objective
1. Explain what is backing up of data and why it is important.
2. Describe what is Serial Access and Direct Access.
3. Create a mind map explaining what is Serial Access and Direct Access.
1 / 12
volgende
Slide 1:
Tekstslide
ICT
Secondary Education
In deze les zitten
12 slides
, met
interactieve quizzen
en
tekstslides
.
Start les
Bewaar
Deel
Printen
Onderdelen in deze les
Objective
1. Explain what is backing up of data and why it is important.
2. Describe what is Serial Access and Direct Access.
3. Create a mind map explaining what is Serial Access and Direct Access.
Slide 1 - Tekstslide
What is backing up of data?
Slide 2 - Open vraag
What is backing up of data?
Backing up of data is simply the
process of making copies of your files.
To back up data you need
2 pieces of equipment:
Storage Device:
The hardware that saves (writes) or reads the data from the storage medium. (DVD Player for example)
Storage Medium:
The hardware that actually holds the data (Memory Sticks, Hard Disk Drives, DVD Disks etc)
Slide 3 - Tekstslide
Why backup data?
Slide 4 - Open vraag
Slide 5 - Tekstslide
Serial Access
This method is also sometimes called 'Sequential Access'.
Data is accessed by starting at the beginning and then searched through, in order/sequence, until the required information is found.
The need to search from the beginning of the storage medium makes this type of data access very slow.
Slide 6 - Tekstslide
Slide 7 - Tekstslide
Examples of storage medium that use serial access are:
Video cassettes
Music cassettes
Backup tape cartridges(hold lots of tape for backing up large amounts of data)
Slide 8 - Tekstslide
What are the examples of Serial Access Storages?
A
Video Cassettes
B
Music Casettes
C
Tape Carts
D
All of the above
Slide 9 - Quizvraag
Direct Access
This method is also sometimes called 'Random Access'.
The computer can calculate exactly where the data has been stored and can go straight to it directly (instant access).
The computer knows where all of the data on the storage medium is and so it can access it very quickly.
Slide 10 - Tekstslide
Slide 11 - Tekstslide
What are the examples of Direct Access Storage?
A
USB Memory Sticks
B
Flash Memory
C
Blu-ray Discs
D
All of the above
Slide 12 - Quizvraag
Meer lessen zoals deze
1.1.3 - Input, Output and Storage
Oktober 2022
- Les met
15 slides
Computing
Further Education (Key Stage 5)
Backup
Januari 2023
- Les met
21 slides
ICT
MBO
Studiejaar 1
DL1 - OneDrive
Juli 2022
- Les met
18 slides
Computing
Lower Secondary (Key Stage 3)
Computer Chapter 6.4 Memory and Storage
Februari 2020
- Les met
16 slides
ICT
Secondary Education
Y7 Hardware
December 2022
- Les met
27 slides
Computing
Lower Secondary (Key Stage 3)
01 - DL1 - OneDrive
September 2023
- Les met
15 slides
Computing
Lower Secondary (Key Stage 3)
Lesson 2 - Using OneDrive
September 2023
- Les met
14 slides
Computing
Lower Secondary (Key Stage 3)
Y7 Hardware 2024
Februari 2024
- Les met
30 slides
Computing
Lower Secondary (Key Stage 3)